Filter element and method for producing a filter element

A filter element for filtering a fluid, the filter element comprising:

• a fold pack comprising an inflow side and an outflow side;
• the fold pack comprising a filter medium folded in a zigzag shape or a corrugated shape;
• and
• one or more adhesive walls comprised of an adhesive material extending within the fold pack and formed by adhesive connections of continuous adhesive material between directly neighboring fold sections of the fold pack;
• wherein the fold pack of the filter element has a width extending along fold edges of the fold pack, a length extending transversely to the width, and a height extending transversely to the width and the length, the height of the fold pack measured between the inflow side and the outflow side of the fold pack:
• wherein the one or more adhesive walls divide the fold pack into a plurality of fold pack sections, and
• wherein the one or more adhesive walls extend at a slant and/or at a curve in a direction of the height of the fold pack of the filler element.

A filter element for filtering a fluid, the filter element comprising:

• a fold pack comprising an inflow side and an outflow side;
• the fold pack comprising a filter medium folded in a zigzag shape or a corrugated shape, and
• one or more adhesive walls comprised of an adhesive material extending within the fold pack and formed by adhesive connections of continuous adhesive material between directly neighboring fold sections of the fold pack;
• wherein the fold pack of the filter element has a width extending along fold edges of the fold pack, a length extending transversely to the width, and a height extending transversely to the width and the length, the height of the fold pack measured between the inflow side and outflow side of the fold pack:
• wherein the one or more adhesive walls divide the fold pack into a plurality of fold pack sections, and
• wherein a height of the one or more adhesive walls at least in sections is less than the height of the fold pack of the filter element.

A filter element for filtering a fluid, the filter element comprising:

• a fold pack comprising an inflow side and an outflow side:
• the fold pack comprising a filter medium folded in a zigzag shape or a corrugated shape:
• the fold pack comprising a height measure between the inflow side and the outflow side;
• and
• one or more adhesive walls comprised of an adhesive material extending within the fold pack and formed by adhesive connections of continuous adhesive material between directly neighboring fold sections of the fold pack;
• wherein the one or more adhesive walls are positioned at least in sections along the height of the fold pack at an angle between about 5° and about 90° relative to a surface normal of the inflow side or of the outflow side.

A method for producing a filter element, the method comprising:

• providing a flat filter medium;
• applying a viscous adhesive material along one or more adhesive lines onto the flat filter medium;
• folding the filter medium along fold lines delimiting neighboring fold sections to form fold edges between the neighboring fold sections;
• curing the viscous adhesive material to form a continuous adhesive connection of the adhesive material between the neighboring fold sections;
• wherein the one or more adhesive lines at least in sections extend obliquely to or offset along the fold lines positioned between respective neighboring fold sections.